AZ104-Q: Blob type for VM VHDs
Q: When you store an OS or data disk VHD for a virtual machine in an Azure storage account, which blob type backs the VHD file?
- A) Block blob
- B) Page blob ✓
- C) Append blob
- D) Table entity
Answer: B — Page blob. VHDs (VHD files) for Azure IaaS VM disks are stored as page blobs, which are optimized for random read/write access and support the paging semantics disks require. Block blobs are for large object/file streaming; append blobs are for logs (append-only). Azure VM disks are usually managed disks today (fully managed by Azure), but if a VHD lives in a storage account it is a page blob.
Why it helps
Blob-type distinctions: block = files/objects, page = VM disks/VHDs, append = logs. A common exam discriminator.
Related
configure-blob-storage · storage-account · redundancy-lrs-zrs-grs